CN111969163A - Lithium battery composite diaphragm, manufacturing method thereof and lithium battery - Google Patents
Lithium battery composite diaphragm, manufacturing method thereof and lithium battery Download PDFInfo
- Publication number
- CN111969163A CN111969163A CN202010896900.4A CN202010896900A CN111969163A CN 111969163 A CN111969163 A CN 111969163A CN 202010896900 A CN202010896900 A CN 202010896900A CN 111969163 A CN111969163 A CN 111969163A
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- organic framework
- film
- framework compound
- metal organic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cell Separators (AREA)
Abstract
The invention discloses a lithium battery composite diaphragm, which comprises a polymer matrix film and a metal organic framework compound heat insulation film; the metal organic framework compound heat insulation film covers two sides of the polymer matrix film, wherein the polymer matrix film is subjected to hydrophilic treatment; the metal organic framework compound heat insulation film is a heat insulation film obtained by in-situ growth on the surface of the polymer matrix film. The invention enlarges the application range and the working safety of the lithium battery, and the organic-inorganic hybrid structure of the metal organic framework compound enables the metal organic framework compound to be stably combined with the polymer matrix membrane, thereby avoiding the problem that the metal organic framework compound is not tightly combined with the matrix membrane and falls off. The invention also provides a manufacturing method of the lithium battery composite diaphragm with the beneficial effects and a lithium battery.
Description
Technical Field
The invention relates to the technical field of electrochemistry, in particular to a lithium battery composite diaphragm, a manufacturing method thereof and a lithium battery.
Background
With the development of science and technology, more and more electronic devices enter the daily life of people, and a bottleneck limiting the development of the electronic devices is the problem of energy supply to the electronic devices, namely the performance of batteries, and is also an important limiting factor for the development of the electronic devices.
The battery separator is an important component of a battery, and the performance of the battery separator directly affects the electrochemical performance, service life and safety of the battery. However, in practical applications, the low heat resistance (PE melting point 135 ℃, PP melting point 165 ℃) and high heat shrinkage rate of the conventional common polymer separator are likely to cause thermal runaway, short circuit and even explosion of the lithium ion battery. The existing method for improving the heat resistance of the diaphragm generally comprises the following steps: and (3) secondarily coating a heat-resistant coating on the surface of the polymer diaphragm, wherein the existing heat-resistant coatings are inorganic coatings. In order to ensure the uniformity and stability of the heat-resistant coating, the coating is thicker, and the energy density of the battery is greatly reduced. The coating method generally uses a binder, so that hole blocking is easy to occur, mass transfer is influenced, and the internal consumption of the battery is increased. In addition, the bonding force between the inorganic heat-resistant coating and the diaphragm substrate is physical bonding, the bonding is unstable, and the inorganic heat-resistant coating is easy to fall off
Therefore, how to find a light, stable and hole-blocking-resistant battery heat-insulating flame-retardant diaphragm becomes a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a lithium battery composite diaphragm, a manufacturing method thereof and a lithium battery, and aims to solve the problems that in the prior art, the diaphragm is large in thickness, poor in stability and easy to block holes.
In order to solve the technical problem, the invention provides a lithium battery composite diaphragm, which comprises a polymer matrix film and a metal organic framework compound heat insulation film;
the metal organic framework compound heat insulation film covers two sides of the polymer matrix film, wherein the polymer matrix film is subjected to hydrophilic treatment;
the metal organic framework compound heat insulation film is a heat insulation film obtained by in-situ growth on the surface of the polymer matrix film.
Optionally, in the lithium battery composite separator, the metal organic framework compound heat insulation film is a metal organic framework compound heat insulation film with a nanosheet-shaped morphology.
Optionally, in the lithium battery composite separator, the organic ligand of the metal-organic framework compound heat insulation film is dimethyl imidazole.
Optionally, in the lithium battery composite separator, the metal salt ligand of the metal organic framework compound heat insulation film is zinc nitrate.
Optionally, in the lithium battery composite separator, the thickness of the metal organic framework compound thermal insulation film ranges from 2 micrometers to 100 micrometers, inclusive.
Optionally, in the lithium battery composite separator, the polymer matrix film is a polyolefin film.
A method of manufacturing a lithium battery composite separator, comprising:
carrying out surface hydrophilic treatment on the polymer matrix membrane to obtain a hydrophilic matrix membrane;
placing the hydrophilic matrix membrane in a prefabricated metal organic framework compound precursor solution, and carrying out in-situ growth of a metal organic framework compound heat insulation membrane to obtain a prefabricated diaphragm; wherein the hydrophilic matrix membrane is suspended in a reaction vessel;
and cleaning and drying the prefabricated diaphragm to obtain the lithium battery composite diaphragm.
Optionally, in the method for manufacturing a composite separator for a lithium battery, the metal-organic framework compound precursor solution is an aqueous solution.
Optionally, in the method for manufacturing a lithium battery composite separator, the performing surface hydrophilic treatment on the polymer matrix film to obtain a hydrophilic matrix film includes:
soaking the polymer matrix membrane by using a mixed solution of nitric acid and potassium permanganate to obtain a prefabricated hydrophilic membrane;
and cleaning the prefabricated hydrophilic film by using deionized water to obtain the hydrophilic matrix film.
A lithium battery comprising the lithium battery composite separator as defined in any one of the above.
The lithium battery composite diaphragm provided by the invention comprises a polymer matrix film and a metal organic framework compound heat insulation film; the metal organic framework compound heat insulation film covers two sides of the polymer matrix film, wherein the polymer matrix film is subjected to hydrophilic treatment; the metal organic framework compound heat insulation film is a heat insulation film obtained by in-situ growth on the surface of the polymer matrix film. The invention benefits from the good heat insulation and flame retardation performance of the metal organic framework compound, so that the lithium battery composite diaphragm can keep stable at high temperature, the application range and the working safety of the lithium battery are enlarged, in addition, the organic-inorganic hybrid structure of the metal organic framework compound enables the lithium battery composite diaphragm to be stably combined with the polymer matrix film, compared with the prior art, the problem that the lithium battery composite diaphragm is not tightly combined with the matrix film and falls off is avoided, in addition, the heat insulation film of the metal organic framework compound has controllable thickness and light weight, has a microporous structure, does not react with the lithium battery electrolyte, can keep the smooth mass transfer of the battery and simultaneously does not influence the energy density of the battery, furthermore, the heat insulation film of the metal organic framework compound is obtained by an in-situ growth mode, and is suitable for large-scale mass production of the heat insulation film of the metal organic, the production efficiency is greatly improved. The invention also provides a manufacturing method of the lithium battery composite diaphragm with the beneficial effects and a lithium battery.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of one embodiment of a lithium battery composite separator provided in the present invention;
FIG. 2 is a schematic structural diagram of another embodiment of a composite separator for a lithium battery according to the present invention;
FIG. 3 is a schematic flow chart illustrating one embodiment of a method for manufacturing a composite separator for a lithium battery according to the present invention;
fig. 4 is a schematic diagram of an in-situ growth process of an embodiment of a method for manufacturing a lithium battery composite separator according to the present invention.
Detailed Description
It should be noted that hereinafter, the MOFs are the metal-organic framework compounds.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a lithium battery composite diaphragm, the structural schematic diagram of one embodiment of which is shown in fig. 1, and is called as the first embodiment, and the lithium battery composite diaphragm comprises a polymer matrix film 10 and a metal organic framework compound heat insulation film 20;
the metal organic framework compound heat insulation film 20 covers two sides of the polymer matrix film 10, wherein the polymer matrix film 10 is subjected to hydrophilic treatment;
the metal organic framework compound heat insulation film 20 is a heat insulation film obtained by in-situ growth on the surface of the polymer matrix film 10.
As a preferred embodiment, the thickness of the metal organic framework compound thermal barrier film 20 ranges from 2 microns to 100 microns, such as any of 2.0 microns, 52.0 microns, or 100.0 microns, inclusive.
The polymer matrix film 10 is a polyolefin film, and specifically may be a polyethylene separator (PE), a polypropylene separator (PP), or a polypropylene/polyethylene/polypropylene mixed polymer separator (PP/PE/PP). The polyolefin diaphragm has the advantages of high strength and high porosity, and is not easy to block while the stability of the battery is maintained.
The MOFs heat insulation film 20 is formed by organic and inorganic unit distribution positions, has a regular crystal structure and a rich microporous structure, can effectively inhibit gas movement, and reduces the average free path to a few nanometers; meanwhile, phonons are scattered in the hybrid structure, so that the thermal conductivity of the phonons is greatly reduced, and the phonons have good intrinsic heat-insulating property.
The lithium battery composite diaphragm provided by the invention comprises a polymer matrix film 10 and a metal organic framework compound heat insulation film 20; the metal organic framework compound heat insulation film 20 covers two sides of the polymer matrix film 10, wherein the polymer matrix film 10 is subjected to hydrophilic treatment; the metal organic framework compound heat insulation film 20 is a heat insulation film obtained by in-situ growth on the surface of the polymer matrix film 10. The invention benefits from the good heat insulation and flame retardant performance of the metal organic framework compound, so that the lithium battery composite diaphragm can keep stable at high temperature, the application range and the working safety of the lithium battery are enlarged, in addition, the organic-inorganic hybrid structure of the metal organic framework compound enables the lithium battery composite diaphragm to be stably combined with the polymer matrix film 10, compared with the prior art, the problem that the lithium battery composite diaphragm is not tightly combined with the matrix film and falls off is avoided, in addition, the metal organic framework compound heat insulation film 20 has controllable thickness and light weight, has a microporous structure, does not react with the lithium battery electrolyte, can keep the smooth mass transfer of the battery and simultaneously does not influence the energy density of the battery, furthermore, the metal organic framework compound heat insulation film 20 is obtained by an in-situ growth mode, and is suitable for large-scale mass production of the metal organic framework compound heat insulation film 20, the production efficiency is greatly improved.
On the basis of the first embodiment, the metal-organic framework compound heat insulation film 20 is further improved to obtain a second embodiment, which is shown in fig. 2, and includes a polymer matrix film 10 and a metal-organic framework compound heat insulation film 20;
the metal organic framework compound heat insulation film 20 covers two sides of the polymer matrix film 10, wherein the polymer matrix film 10 is subjected to hydrophilic treatment;
the metal organic framework compound heat insulation film 20 is a heat insulation film obtained by in-situ growth on the surface of the polymer matrix film 10;
the metal organic framework compound heat insulation film 20 is a metal organic framework compound heat insulation film 20 with a nanometer sheet shape.
The present embodiment is different from the above embodiments in that the present embodiment specifically defines the form of the metal organic framework compound heat insulation film 20, and the rest of the structure is the same as the above embodiments, and will not be described herein again.
The organic ligand of the metal-organic framework compound heat insulation film 20 is dimethyl imidazole, and of course, other organic matters can be selected as the organic ligand according to actual conditions.
Furthermore, the metal salt ligand of the metal organic framework compound heat insulation film 20 is zinc nitrate, which has stable property and low cost, and can reduce the production cost of the lithium battery composite diaphragm, and of course, other metal salts, such as cobalt nitrate, copper nitrate, and the like, can be selected.
In this embodiment, the regularly arranged MOFs array with the nano-sheet shape is obtained. This structure facilitates ionic conduction and absorption of electrolyte. Through experimental verification, of course, in actual production, the morphology of the MOFs thermal insulation film 20 may also be adjusted according to actual conditions, for example, the granular MOFs thermal insulation film 20 is adopted.
The change of the liquid absorption amount of the PP membrane before and after the MOFs membrane is added is shown below, and the liquid absorption amount of the PP membrane of the MOFs heat insulation membrane 20 with the nano-sheet shape to the electrolyte is 14 times of that of the original PP membrane.
Table 1 original PP separator vs. electrolyte imbibition scale
TABLE 2 PP Membrane to electrolyte imbibition scale after adding MOFs Membrane
The invention also provides a method for manufacturing the lithium battery composite diaphragm, wherein the flow schematic diagram of one specific embodiment is shown in fig. 3, which is called as a third specific embodiment and comprises the following steps:
s101: and carrying out surface hydrophilic treatment on the polymer matrix membrane to obtain a hydrophilic matrix membrane.
As a specific implementation mode of the step, the method comprises the following steps:
soaking the polymer matrix membrane by using a mixed solution of nitric acid and potassium permanganate to obtain a prefabricated hydrophilic membrane;
and cleaning the prefabricated hydrophilic film by using deionized water to obtain the hydrophilic matrix film.
The process flow is simple, the controllability is strong, and the cost is low.
Preferably, the concentration of the nitric acid is 3-14M, and the concentration of the potassium permanganate is 0.02-0.5M;
further, the hydrophilic treatment time is within a range of 12 to 48 hours.
S102: placing the hydrophilic matrix membrane in a prefabricated metal organic framework compound precursor solution, and carrying out in-situ growth of a metal organic framework compound heat insulation membrane to obtain a prefabricated diaphragm; wherein the hydrophilic matrix membrane is suspended in a reaction vessel.
As a preferable embodiment, the precursor solution of the metal organic framework compound is an aqueous solution, which has low cost and is harmless to the environment and workers.
In the MOFs heat insulation film in-situ growth reaction, the concentration of a metal salt ligand in a solution is 0.05-0.1M, and the concentration of an organic ligand in the solution is 0.2-1M.
The reaction time of the MOFs heat insulation film in-situ growth ranges from 1 hour to 24 hours, and further ranges from 6 hours to 24 hours.
The process flow diagram of the reaction step in which in-situ growth occurs is shown in fig. 4, the hydrophilic matrix membrane is suspended in a reaction vessel, furthermore, 1-1000 cross bars are arranged in a reactor (i.e. a reaction site) in the diagram, a plurality of cross bars are arranged to ensure that both sides of the membrane with a larger area are in full contact with the reaction solution, a stirrer is arranged below the reactor, and the stirring is ceaselessly performed in the reaction process of in-situ growth, so that space is saved, reactants are fully utilized, and mass and economic production is facilitated.
S103: and cleaning and drying the prefabricated diaphragm to obtain the lithium battery composite diaphragm.
Specifically, the prefabricated diaphragm is taken out of the reaction stock solution, cleaned for 3-5 times, and the surface solution and the unstable MOFs particles are removed. And drying for 6-12 hours at the temperature of 60 ℃. And then transferring the mixture into a vacuum oven at 60 ℃, and drying the mixture for 12 to 24 hours in vacuum to fully remove moisture.
The invention provides a manufacturing method of a lithium battery composite diaphragm, which comprises the steps of carrying out surface hydrophilic treatment on a polymer matrix membrane to obtain a hydrophilic matrix membrane; placing the hydrophilic matrix membrane in a prefabricated metal organic framework compound precursor solution, and carrying out in-situ growth of a metal organic framework compound heat insulation membrane to obtain a prefabricated diaphragm; wherein the hydrophilic matrix membrane is suspended in a reaction vessel; and cleaning and drying the prefabricated diaphragm to obtain the lithium battery composite diaphragm. The invention benefits from the good heat insulation and flame retardation performance of the metal organic framework compound, so that the lithium battery composite diaphragm can keep stable at high temperature, the application range and the working safety of the lithium battery are enlarged, in addition, the organic-inorganic hybrid structure of the metal organic framework compound enables the lithium battery composite diaphragm to be stably combined with the polymer matrix film, compared with the prior art, the problem that the lithium battery composite diaphragm is not tightly combined with the matrix film and falls off is avoided, in addition, the heat insulation film of the metal organic framework compound has controllable thickness and light weight, has a microporous structure, does not react with the lithium battery electrolyte, can keep the smooth mass transfer of the battery and simultaneously does not influence the energy density of the battery, furthermore, the heat insulation film of the metal organic framework compound is obtained by an in-situ growth mode, and is suitable for large-scale mass production of the heat insulation film of the metal organic, the production efficiency is greatly improved.
The invention also provides a lithium battery with the beneficial effects, which comprises the lithium battery composite diaphragm. The lithium battery composite diaphragm provided by the invention comprises a polymer matrix film and a metal organic framework compound heat insulation film; the metal organic framework compound heat insulation film covers two sides of the polymer matrix film, wherein the polymer matrix film is subjected to hydrophilic treatment; the metal organic framework compound heat insulation film is a heat insulation film obtained by in-situ growth on the surface of the polymer matrix film. The invention benefits from the good heat insulation and flame retardation performance of the metal organic framework compound, so that the lithium battery composite diaphragm can keep stable at high temperature, the application range and the working safety of the lithium battery are enlarged, in addition, the organic-inorganic hybrid structure of the metal organic framework compound enables the lithium battery composite diaphragm to be stably combined with the polymer matrix film, compared with the prior art, the problem that the lithium battery composite diaphragm is not tightly combined with the matrix film and falls off is avoided, in addition, the heat insulation film of the metal organic framework compound has controllable thickness and light weight, has a microporous structure, does not react with the lithium battery electrolyte, can keep the smooth mass transfer of the battery and simultaneously does not influence the energy density of the battery, furthermore, the heat insulation film of the metal organic framework compound is obtained by an in-situ growth mode, and is suitable for large-scale mass production of the heat insulation film of the metal organic, the production efficiency is greatly improved.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is to be noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The lithium battery composite diaphragm and the manufacturing method thereof, and a lithium battery provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A lithium battery composite diaphragm is characterized by comprising a polymer matrix film and a metal organic framework compound heat insulation film;
the metal organic framework compound heat insulation film covers two sides of the polymer matrix film, wherein the polymer matrix film is subjected to hydrophilic treatment;
the metal organic framework compound heat insulation film is a heat insulation film obtained by in-situ growth on the surface of the polymer matrix film.
2. The lithium battery composite separator as claimed in claim 1, wherein the metal organic framework compound thermal insulation film is a metal organic framework compound thermal insulation film having a nano-sheet morphology.
3. The lithium battery composite separator as claimed in claim 2, wherein the organic ligand of the metal-organic framework compound thermal barrier film is dimethylimidazole.
4. The lithium battery composite separator as claimed in claim 3, wherein the metal salt ligand of the metal organic framework compound heat insulating film is zinc nitrate.
5. The lithium battery composite separator as claimed in claim 1, wherein the thickness of the metal organic framework compound thermal barrier film ranges from 2 microns to 100 microns, inclusive.
6. The lithium battery composite separator according to any one of claims 1 to 5, wherein the polymer matrix film is a polyolefin film.
7. A method for manufacturing a lithium battery composite separator, comprising:
carrying out surface hydrophilic treatment on the polymer matrix membrane to obtain a hydrophilic matrix membrane;
placing the hydrophilic matrix membrane in a prefabricated metal organic framework compound precursor solution, and carrying out in-situ growth of a metal organic framework compound heat insulation membrane to obtain a prefabricated diaphragm; wherein the hydrophilic matrix membrane is suspended in a reaction vessel;
and cleaning and drying the prefabricated diaphragm to obtain the lithium battery composite diaphragm.
8. The method for manufacturing a lithium battery composite separator according to claim 7, wherein the metal-organic framework compound precursor solution is an aqueous solution.
9. The method for manufacturing a composite separator for a lithium battery according to claim 7, wherein the step of subjecting the polymer matrix film to surface hydrophilization treatment to obtain a hydrophilic matrix film comprises:
soaking the polymer matrix membrane by using a mixed solution of nitric acid and potassium permanganate to obtain a prefabricated hydrophilic membrane;
and cleaning the prefabricated hydrophilic film by using deionized water to obtain the hydrophilic matrix film.
10. A lithium battery comprising the lithium battery composite separator as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010896900.4A CN111969163A (en) | 2020-08-31 | 2020-08-31 | Lithium battery composite diaphragm, manufacturing method thereof and lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010896900.4A CN111969163A (en) | 2020-08-31 | 2020-08-31 | Lithium battery composite diaphragm, manufacturing method thereof and lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111969163A true CN111969163A (en) | 2020-11-20 |
Family
ID=73399473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010896900.4A Pending CN111969163A (en) | 2020-08-31 | 2020-08-31 | Lithium battery composite diaphragm, manufacturing method thereof and lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111969163A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113964373A (en) * | 2021-09-29 | 2022-01-21 | 惠州锂威新能源科技有限公司 | Diaphragm, preparation method thereof and lithium ion battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868079A (en) * | 2015-05-11 | 2015-08-26 | 河南师范大学 | Method for preparing high invasive lithium ion battery diaphragm |
| CN110270233A (en) * | 2019-05-31 | 2019-09-24 | 浙江工业大学 | A kind of metal organic framework nanometer sheet mixed substrate membrane containing nano-grade molecular sieve and its preparation method and application |
| CN111052477A (en) * | 2017-02-07 | 2020-04-21 | 加利福尼亚大学校务委员会 | Composite electrolyte membrane, method for producing same, and electrochemical device |
| CN111192994A (en) * | 2020-02-28 | 2020-05-22 | 成都新柯力化工科技有限公司 | Heat-shrinkage-resistant polyethylene lithium battery diaphragm and preparation method thereof |
-
2020
- 2020-08-31 CN CN202010896900.4A patent/CN111969163A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868079A (en) * | 2015-05-11 | 2015-08-26 | 河南师范大学 | Method for preparing high invasive lithium ion battery diaphragm |
| CN111052477A (en) * | 2017-02-07 | 2020-04-21 | 加利福尼亚大学校务委员会 | Composite electrolyte membrane, method for producing same, and electrochemical device |
| CN110270233A (en) * | 2019-05-31 | 2019-09-24 | 浙江工业大学 | A kind of metal organic framework nanometer sheet mixed substrate membrane containing nano-grade molecular sieve and its preparation method and application |
| CN111192994A (en) * | 2020-02-28 | 2020-05-22 | 成都新柯力化工科技有限公司 | Heat-shrinkage-resistant polyethylene lithium battery diaphragm and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 林山等: "MOFs改性玻璃纤维膜的制备及其在锂硫电池隔膜中的应用", 《浙江理工大学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113964373A (en) * | 2021-09-29 | 2022-01-21 | 惠州锂威新能源科技有限公司 | Diaphragm, preparation method thereof and lithium ion battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | A functionalized separator enables dendrite‐free Zn anode via metal‐polydopamine coordination chemistry | |
| Han et al. | A protective layer for lithium metal anode: why and how | |
| Li et al. | Highly stable lithium–sulfur batteries achieved by a SnS/porous carbon nanosheet architecture modified celgard separator | |
| Hou et al. | Macroporous LiFePO 4 as a cathode for an aqueous rechargeable lithium battery of high energy density | |
| Chen et al. | Zeolitic imidazolate framework-67 based separator for enhanced high thermal stability of lithium ion battery | |
| Wang et al. | A single-ion gel polymer electrolyte based on polymeric lithium tartaric acid borate and its superior battery performance | |
| Zhang et al. | Biomimetic Dendrite‐Free Multivalent Metal Batteries | |
| CN103299461A (en) | Lead-acid battery with active material contained in crystal lattice | |
| CN110212242B (en) | Porous gel polymer electrolyte and preparation method thereof | |
| CN103311486A (en) | Organic-inorganic composite membrane as well as preparation and application thereof | |
| CN106252663B (en) | Metal-organic framework materials CuBDC nanometer sheet and its preparation method and application | |
| Hu et al. | Enhancing the kinetics of zinc ion deposition by catalytic ion in polymer electrolytes for advanced Zn–MnO2 batteries | |
| Chen et al. | Tantalum oxide nanosheets/polypropylene composite separator constructing lithium-ion channels for stable lithium metal batteries | |
| CN112670543B (en) | Composite solid electrolyte membrane based on hollow MOF (metal organic framework) and preparation method and application thereof | |
| CN108110324A (en) | A kind of preparation method of solid lithium ion battery | |
| CN108134032A (en) | A kind of lithium ion battery polyether-ether-ketone porous septum and its preparation and application | |
| CN102324481A (en) | Composite diaphragm for lithium ion battery and preparation method thereof | |
| Jiang et al. | Recent Progress and Prospects on Dendrite‐free Engineerings for Aqueous Zinc Metal Anodes | |
| Wen et al. | Enhanced electrochemical properties of a novel polyvinyl formal membrane supporting gel polymer electrolyte by Al2O3 modification | |
| CN111244395A (en) | Lithium ion pole piece, preparation method thereof and lithium ion battery | |
| CN112151857A (en) | High-stability multilayer solid electrolyte, preparation method thereof and solid battery | |
| CN111969163A (en) | Lithium battery composite diaphragm, manufacturing method thereof and lithium battery | |
| CN109428038A (en) | A kind of battery diaphragm and preparation method thereof and lithium ion battery | |
| Lu et al. | Boosting the electrochemical performance of Li4Ti5O12 through nitrogen‐doped carbon coating | |
| CN114203976A (en) | Mixed solution capable of improving stability of metal lithium cathode, preparation method and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201120 |